I think you might be a bit confused when it comes to negative voltages.
Voltage is all relative. You can think of it like elevation. A positive voltage would be when something is at an elevation higher than what you call "home", while a negative voltage would be when something is at an elevation lower than what you call "home". It's all relative to your "home" though, call somewhere else "home" and the relative elevation of everything else shifts up or down accordingly.
Voltage works the same way, it's all relative. "Zero volts" is whatever node in the circuit you point at and say "that's zero volts". Anything above that is therefore positive, anything below it is negative. Point to a different part of the circuit and say "nope, THAT'S zero volts", and the relative voltage of everything else changes accordingly.
Op-amps only have two power inputs, a "more positive" and a "more negative" input. It has no "ground" reference, it doesn't care. As long as the "more positive" terminal is more positive than the "more negative" terminal, by at least the minimum and no more than the maximum values specified in the datasheet, it's happy. There is no such thing as a "single supply" op-amp or a "dual supply" op-amp, there are just op-amps. Every op-amp is both "single supply" and "dual supply", because whether the voltages you feed it are "ground and V+" or "V- and V+" is completely up to your own naming convention, the op-amp doesn't care. You could call the supplies "+/- 5V", or "0V/10V", or "20V/30V", doesn't matter, as long as you don't exceed the maximum voltage difference for the op-amp, and whatever signals you're feeding into the + and - terminals are between the rails and follow the recommended input/output ranges specified in the datasheet (namely, how close you can get to the rails on the input and output).
If you're feeding an op-amp what you call "0V" and "10V" on its supply lines, and you want it to buffer an AC signal, then your best bet is to center the AC signal at "5V", so it swings between say "3V" and "7V". As far as the op-amp is concerned, this is exactly the same as if you had fed it "-5V" and "+5V" and centered your AC signal at "0V", so it swings between "-2V" and "+2V". The only difference is which part of the circuit you chose to call "0V".